stunnel 5.68 released

[Michał Trojnara]

Dear Users,

I have released version 5.68 of stunnel.

### Version 5.68, 2023.02.07, urgency: HIGH
* Security bugfixes
   - OpenSSL DLLs updated to version 3.0.8.
* New features
   - Added the new 'CAengine' service-level option
     to load a trusted CA certificate from an engine.
   - Added requesting client certificates in server
     mode with 'CApath' besides 'CAfile'.
* Bugfixes
   - Fixed EWOULDBLOCK errors in protocol negotiation.
   - Fixed handling TLS errors in protocol negotiation.
   - Prevented following fatal TLS alerts with TCP resets.
   - Improved OpenSSL initialization on WIN32.
   - Improved testing suite stability.
   - Improved file read performance.
   - Improved logging performance.

Home page: https://www.stunnel.org/
Download: https://www.stunnel.org/downloads.html

SHA-256 hashes:

dcd895ab088b043d4e0bafa8b934e7ab3e697293828dbe9fce46cb7609a7dacf stunnel-5.68.tar.gz
62807f6233c8a5693104c09b44ebde6cc395877d948651c3ff0767e07ccdd316 stunnel-5.68-win64-installer.exe
93291060fdfc889431e8bce5cfe875b23be2bac11e2338f8f8f84d509f1b33fa stunnel-5.68-android.zip

Best regards,
     Mike

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